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25 June 2019

San Leon Energy plc

("San Leon" or the "Company")

Akaso-15 Well Test

&

Update on OML 18 Drilling

San Leon Energy plc announced on 28 February 2019 that Eroton, the operator of the OML 18 licence, onshore Nigeria, was preparing to perform a well test on the first of its newly-drilled wells, Akaso-15. The well test took longer to test than anticipated due to various operational factors including downtime on the export pipeline.

Akaso-15 has a dual completion (a separate production tubing for two different reservoirs, which can therefore be produced simultaneously). The combined well test rate on a 32/64" choke is 4800 bopd, and the well has now been put on production.

The Akaso PMMO-1 well (which will be known as Akaso-16 after completion) is awaiting completion using a hydraulic workover unit. Eroton expects to perform future well completions using this unit in order to save rig time. The drilling rig is moving to the next well location, Akaso MTMY-1.

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